android 解析json数据格式的方法

json数据格式解析我自己分为两种；

一种是普通的，一种是带有数组形式的；

普通形式的：
服务器端返回的json数据格式如下：

{"userbean":{"uid":"100196","showname":"\u75af\u72c2\u7684\u7334\u5b50","avtar":null,"state":1}}

分析代码如下：

// todo 状态处理 500 200
                int res = 0;
                res = httpclient.execute(httppost).getstatusline().getstatuscode();
                if (res == 200) {
                    /*
                     * 当返回码为200时，做处理
                     * 得到服务器端返回json数据，并做处理
                     * */
                    httpresponse httpresponse = httpclient.execute(httppost);
                    stringbuilder builder = new stringbuilder();
                    bufferedreader bufferedreader2 = new bufferedreader(
                            new inputstreamreader(httpresponse.getentity().getcontent()));
                    string str2 = "";
                    for (string s = bufferedreader2.readline(); s != null; s = bufferedreader2
                            .readline()) {
                        builder.append(s);
                    }
                    log.i("cat", ">>>>>>" + builder.tostring());

jsonobject jsonobject = new jsonobject(builder.tostring())
                        .getjsonobject("userbean");

                string uid;
                string showname;
                string avtar;
                string state;

                uid = jsonobject.getstring("uid");
                showname = jsonobject.getstring("showname");
                avtar = jsonobject.getstring("avtar");
                state = jsonobject.getstring("state");

带数组形式的：
服务器端返回的数据格式为：

{"calendar":
    {"calendarlist":
            [
            {"calendar_id":"1705","title":"(\u4eb2\u5b50)ddssd","category_name":"\u9ed8\u8ba4\u5206\u7c7b","showtime":"1288927800","endshowtime":"1288931400","allday":false},
            {"calendar_id":"1706","title":"(\u65c5\u884c)","category_name":"\u9ed8\u8ba4\u5206\u7c7b","showtime":"1288933200","endshowtime":"1288936800","allday":false}
            ]
    }
}

分析代码如下：

// todo 状态处理 500 200
                int res = 0;
                res = httpclient.execute(httppost).getstatusline().getstatuscode();
                if (res == 200) {
                    /*
                     * 当返回码为200时，做处理
                     * 得到服务器端返回json数据，并做处理
                     * */
                    httpresponse httpresponse = httpclient.execute(httppost);
                    stringbuilder builder = new stringbuilder();
                    bufferedreader bufferedreader2 = new bufferedreader(
                            new inputstreamreader(httpresponse.getentity().getcontent()));
                    string str2 = "";
                    for (string s = bufferedreader2.readline(); s != null; s = bufferedreader2
                            .readline()) {
                        builder.append(s);
                    }
                    log.i("cat", ">>>>>>" + builder.tostring());
                    /**
                     * 这里需要分析服务器回传的json格式数据，
                     */
                    jsonobject jsonobject = new jsonobject(builder.tostring())
                            .getjsonobject("calendar");
                    jsonarray jsonarray = jsonobject.getjsonarray("calendarlist");
                    for(int i=0;i<jsonarray.length();i++){
                        jsonobject jsonobject2 = (jsonobject)jsonarray.opt(i);
                        calendarinfo calendarinfo = new calendarinfo();
                        calendarinfo.setcalendar_id(jsonobject2.getstring("calendar_id"));
                        calendarinfo.settitle(jsonobject2.getstring("title"));
                        calendarinfo.setcategory_name(jsonobject2.getstring("category_name"));
                        calendarinfo.setshowtime(jsonobject2.getstring("showtime"));
                        calendarinfo.setendtime(jsonobject2.getstring("endshowtime"));
                        calendarinfo.setallday(jsonobject2.getboolean("allday"));
                        calendarinfos.add(calendarinfo);
                    }

总结，普通形式的只需用jsonobject ，带数组形式的需要使用jsonarray 将其变成一个list。